FQDNs and Port Numbers for Inbound and Outbound Communication with Speech SDK

Question

What are the specific FQDNs and port numbers required for inbound and outbound external communication when using the Speech SDK? This information is needed to properly configure the firewall settings for applications utilizing the Speech SDK. Please provide a concise answer with any relevant code snippets or documentation references.

Answer 1

@Korogi Tomoki To configure the firewall settings for applications utilizing the Speech SDK, you need to allow outbound traffic on port 443 for the following FQDNs:

{region}.{speech service offering}.speech.microsoft.com/{URL path}

Where, region corresponds to the region of your resource and speech service offering is the feature of speech service that you want to use. For example, stt is the offering for speech to text. The SDK only supports calling in websocket(WS) but not REST.

If you are using custom domain name and a private endpoint the setup is also the same. This is documented on this page for SDK and REST API. I hope this helps!!

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